Door-lock



L. HILDRETH.

DOOR LOCK.

APPLICATION FILED 001.11. I9I9.

mma Nov. 16, 1920 2 SHEETS-SHEET I.

L. HILDRETH.

DOOR LOCK.

APPLICATION FILED ocr. H, 1919.

Patented Nov. 16, 1920.

2 SHEETS-SHEET 2.

Hill.

Imi

@warmup UNITED STATES PATENT-OFFICE.

LAWRENCE HILDRETH, 0F LEXINGTONrKENTUCKY.

DOOR-LOCK.

invention, such as will enable others skilled in the art to which itappertains to make and use the saine. 1

My invention relates to improvements in door locks, and moreparticularly to those intended principally for use on automobile doors,although the device is not restrictedA to any particular field, Y,

The principal object of the invention is to provide a door lock ofsimple and inexpenn sive nature havin novel means for holding the boltretractec while the door is open,' and for releasing said boltautomaticallyV when the door is closed, thus making'it unnecessary toslam the door as must now be done.

A. further object is to provide a lock of the above named type having arocking control member and a bolt forming bill carried by said member,said bill `being tapered for snug reception in a keeper to preventrattling of the door. Y

In constructing the device, a novel form of latch is carried by thecontrol member for holding it in bolt releasing position, and

Y. a further object is to provide a single spring for moving said latchto operative position when the lockis released, and for progecting thebolt when the door is closed.

Still further objects are to provide a trig-y ger and link for releasingthe'la'tch when lthe door is'closed; to provide guiding means for saidlink on said latch; and to employ a single spring acting diagonally onsaid link for shifting it longitudinally and laterally for properengagement with the latch.

With the foregoing in view, theY invention resides in the novelconstruction and arrangement of parts hereinafter described and claimed,the descriptive matter being supplemented bythe accompanying drawingswhich form a part of this application.

Figure 1 is an elevation of the interior parts of the lock showing themin position for securing the door closed. f

Fig. 2 is a view similar to 1 showing A Specification of Letters Patent.Patetgd Nov, 16, 1920.' Application filed october 11, 1919. i

Serial N0. 329,999. Y 1

different ted lines. f

Fig. 3 is a detail elevationY showing the positions of parts in full anddotinanner in which the latch is released whenthe door is closed. l Y iFigs.' 4 and 5 are respectively horizontal and verticalk sections asindicated by lines et-4L and 5-5101- Fig. 1.

Fig. 6 isa perspective view of the bolt or bill. l l

Fiat-7 is a vertical section on the plane of ber inV bill releasingposition, while a link 7 and a trigger 8 are provided for releasing saidlatchV automatically when the door is Y closed.

The bill 3 may be mounted in any preferred manner on the control member1 and may also be of Vany desired construction. Iir the present showinghowever, the bill is formed by one end of a metal bar, this bar beingbent to form two crank arms 9 andjlO and av bearing 11, the latter beingsecured by a rivet or the like 'l2 to the member l, while the crank armscarry the .remaining portion of the bar, which portion is preferably concentric with the member 1, though located off the center thereof. Thebill 3 is preferably tapered toward its free end as illustrated in Figs.6 and 7 and it will thiis` snugly engage the keeper 4 to liold the dooragainst rattling'.

The latch 5 may be mounted in any suitable inanner, but I have shownsaid latch pivoted to a lateral arm 13 extending from the crank arm 9,said arm being preferably bifurcated for the reception of the latch asshown in Fig. 6. The latch may well be' stamped from sheet metal and lisprovided with a shoulder 14 adapted to engage a relatively 'iXed stop 15when the control member 1 is turned to lock releasing position. VC/henthis takes place, the spring 16 which is connected to the latch 5 at apoint spaced from its pivot 6, is placed under tension,

provided with a guide for the link 7, said guide preferably consistingof a lateral flange 17 having a vertical slot 18 in whichV the end ofsaid link, remote from the trigger 8, is slidably received;

The upper edge of link 7 isiorm'ed with a shoulder 19 adapted forengagement with the iiange 17 at the ripper 'end of the slot 1S,

when said link is properly shifted by a spring 20, upon opening of thedoor. -lt will be observed that the spring 2O exerts its tensiondiagonally of the link 7, thus not Only sliding thelatter'longitndinally i-n the required manner, but shifting it laterallyto engage the shoulder 19, with the' corresponding shoulder of the latch5, that is, thcportion of the flange 17 at the upper end of slot 18.

The trigger 8 be constructed` in'any adequate man-ner, but this part inaddition to the latch 5 4Vand the link v7, vmay well be Y stamped Lfromsheet metal as shown.

In the present form of the device, the trigger is provided with upperand lower trunnions 21 rotatable in iiXed bearings 22, said triggerhaving a crank arm 23V pivoted lto the link 7, and a lateral wing2Apositioned to strike the keeper 4c when the door is closed. The rotarymotion ofthe trigger- 8 under the action of the spring 20, may well becontrolled by a'stop 25 carried `by the lowermost of theibearings 22,said stop being disposed in the path of the arm 23.

All the parts above described may be suitably incased and when used onautomobiles, will be housed within the door in the usual way. Regardlessof the form of door on which the vdevice is used however, it will behighly eflicient and in every way desirable. The moment the knob 2 isturned sufficiently to release the bill 3 from the keeper d, the

Y latch 5 moves downwardlyagainst the'tension of spring 16 and vitsshoulder 1st engagesthe stop 15, thus holding the controlling member 1in bill releasing position. 1Viv/Then the door is now opened, spring 2Ocomes into play to shift link 7 into operative engagement with latch 5,at the same time rocking the trigger 8 in a manner to dispose its wing2A in position to strikethe keeper l whenthe door is again closed. Whenthis closing is done, the trigger 8 is rocked on its Vjournals 21, thuspulling upon link 7 in such manner as to release the latch 5, whereuponspring 16 comes into play to proyect the bolt or bill 3 through thekeeper 4. It

v will be observed that no slamming of the door is necessary, yetitjwill remain tightly closed and will be held against rattling, due tothe taper of the bill.

Since probably the best results maybe obtained'from the several detailsshown and described, they may well be followed. I wish it understood,however, that within the scope ofthe invention as claimed, the devicemay be embodied in ormsother than that Shown.-

lv claim: I

1. A door lock comprising a rocking control member, a bill carried bysaidcontrol member for engagement with a keeper, latch pivoted latchcarried by said control member and a stop with which it coacts. forholding saidv control member in bill releasing position, and releasingmeans for said latch means, including a trigger in position to strikethe keeper.

3'; A structure as specified inclaim 2, to-

gether with a spring connected with said latch for engaging it with.said stop and` for rocking said control` membery to bill applyingposition-when said latch isireleased.

A. A door-'lock comprising a rocking control member7 a bill carried bysaid control member forv` engagement with a keeper, a pivotedlatchcarried by'rsaid control member anda stop withv which it coacts forholding said control member in bill releasing position,'said latchhaving a guida-a latch releasing device Areceived in said guide, andatrigger for operating said releasingdevice, said trigger being disposedto strike the keeper. v

5. A door` lock comprising a rocking control member, a bill carried bysaid control memberV for engagement with a keeper, a pivoted latchcarried'by said control member and a stop with vwhich it coacts forholding said control member in billreleasing position, a latch releasinglink, eoac'tingY shoulders on said latch and link for ei'igage-S mentwhen said lath is Set and the door opened, a trigger .connected withsaid link and disposed to strike the keeper, and spring means forshifting said trigger and said link to engage said shoulders when thedoor is opened.

Y G. A structure as Vspecified in claim 5, said spring means consistingof a spring connected with said link and exerting its tension diagonallythereon.

7. A door lock comprising a rocking' control member, a spring projectedbill concentricallyrca'rried by said lcontrol member and tapered to forma compensating agent to take up wear and prevent rattling, means forsecuring said controlV member in bill-releasing position before the dooris opened, a trigger mechanism operated when the door is closed, andmeans for engaging said trigger mechanism With the bill-retaining latchV when the door is opened, whereby said latch and bill will beautomatically released When' the door is closed.

8. A door lock comprising a bolt for engagement With a keeper, a latchfor hold-- ing said bolt in retracted position before the door opens,and a releasing device Which connects with said latch When the dooropens, said releasing device including a trigany opening movement of thedoor, and means automatically operable upon closing of the door forreleasing said holding means.

l0. A ydoor lock comprising a bolt for engagement with a keeper, meansfor locking said bolt in retracted position before `any opening movementof the door, and releasing means for said holding means movableindependently of the latter for operativeengagement therewith when thedoor is opened, said releasing means having a trigger disposed bytheaforesaid movement in position to strike the keeper when the door isclosed.

In testimony whereof I have liereunto'setV my hand.

LAWRENCE HILDRETH.

